What's the difference between crocodilia and crocodilian?
Crocodilia
Definition:
(n. pl.) An order of reptiles including the crocodiles, gavials, alligators, and many extinct kinds.
Example Sentences:
(1) These results extend recent evidence for a close evolutionary relationship between the order Crocodilia and modern birds, since birds also possess a well-developed retinopetal system derived from a cell group in the isthmic midbrain.
(2) We used the Bkm 2(8) clone to evaluate the occurrence of this satellite in DNA from five species of Crocodilia and six species of Chelonia, including the sea turtles Chelonia mydas and Lepidochelys kempi.
Crocodilian
Definition:
(a.) Like, or pertaining to, the crocodile; characteristic of the crocodile.
(n.) One of the Crocodilia.
Example Sentences:
(1) Fossil eggs attributable to dinosaur (probably prosauropod) parentage that have been recovered from the early Jurassic Elliot Formation sediments at the Rooidraai locality possess shells that are similar to those of birds and crocodilians, and distinctly unlike those of chelonians and gekkonids.
(2) Maximum-parsimony analyses of the total data set of 67 vertebrate alpha A sequences support the monophyletic origin of alligator, tegu, and birds and favor the grouping of crocodilians and birds as surviving sister groups in the subclass Archosauria.
(3) With less than 2 percent of all reptilian species examined, TSD apparently is absent in the tuatara, amphisbaenians and snakes; rare in lizards, frequent in turtles, and ubiquitous in crocodilians.
(4) The mammals examined included 3 eutherian, 2 marsupial and a monotreme species and the reptiles 2 saurian, 1 crocodilian and 1 testudine species.
(5) In crocodilians, shelf fusion occurs resulting in an intact secondary palate.
(6) After denaturation of the crocodilian protein in sodium dodecyl sulfate at 100 degrees C the number of titratable sulfhydryls was 4.
(7) Molecular evidence for amniote relationships is reviewed, showing that three genes (beta-hemoglobin, myoglobin, and 18S rRNA) unambiguously support a bird-mammal relationship, compared with one gene (histone H2B) that favors a bird-crocodilian clade.
(8) Representative sonagrams of the distress calls of three other species of crocodilians (Caiman crocodilus, Crocodylus niloticus, and Crocodylus siamensis) are presented and compared with sonagrams of alligator distress calls.
(9) In particular, differentiation of the gonad at 33 degrees C was enhanced compared with 30 degrees C. A hypothesis is developed to explain the mechanism of temperature-dependent sex determination (TSD) in crocodilians.
(10) Examination of the plane of focus of six species of crocodilians both in air and underwater has revealed that they are generally well focused in air for distant targets and severely defocused underwater.
(11) It is known, however, that distinct sex chromosomes are absent in the tuatara and crocodilians, rare in amphisbaenians (worm lizards) and turtles, and common in lizards and snakes (but less than 20% of all species of living reptiles have been karyotyped).
(12) The significance of this proposal is discussed in relation to the radiation and dispersal of ascaridoids of crocodilians.
(13) This suggests that the transition to uricotelism occurred in the sauropsid line of evolution and has persisted through both the lepidosaurian (snakes, lizards) and archosaurian (dinosaurs, crocodilians, birds) lines.
(14) This similarity of reproductive functional morphology between crocodilians and birds may implicate the evolution of an archosaurian mode of oviparity that may shed light on dinosaur reproduction.
(15) After treatment with trypsin the crocodilian protein had 3.5-4 titratable sulfhydryls, whereas there were no titratable sulfhydryls in the chicken protein.
(16) Previous studies have shown that in birds and crocodilians, sole survivors of the archosaurian line, hepatic GS is translated without a transient, N-terminal targeting signal common to other mitochondrial matrix proteins.
(17) The vomeronasal system has been lost independently in several taxa, including crocodilians, some bats, cetaceans, and some primates.
(18) The results are additionally discussed in terms of allosteric modulation of hemoglobin-O2 affinity in crocodilians.
(19) This method allows for more precise measurements of cardiac activity under conditions which closely resemble those of crocodilians in their natural state.
(20) The phylogenetic implications of TSD for crocodilians, and reptiles in particular, are related to the life history of the animal from conception to sexual maturity.